"Mustn't" is the contraction. It is a contraction of "must not." Does anyone think it is a useful contraction? It seems a little informal to me, but I guess we mustn't get carried away with formalism.
The contraction mustn't means "must not."
Weren't is the contraction word for were not.
contraction for the word who is: who's
contraction for the word he is: he's
No, it's not a contraction. The word and is a whole word.
Contraction word for she will: she'll
There is no contraction for the word apostrophe. It's is a contraction of it is or it has.
Didn't is the contraction for did not.
No. A contraction cannot be a compound word.
the contraction of will not: won't
There is no contraction for the words "did you".
The contraction for 'was not' is wasn't.